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    Enable signature of the Auth Request. If you enable it the encryption and signing key would available in the SP metadata file and URL (JENKINS_URL/securityRealm/metadata).
    The disable of signing auth request does not work with HTTP redirection binging, it only works for POST binding.
    <pre>
        &lt;md:SPSSODescriptor AuthnRequestsSigned="true" ...&gt;
    </pre>
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